Zip Code 42259 — Mammoth Cave, KY
42259 is a ZIP Code associated with Mammoth Cave, KY, located within Edmonson. 42259 ranks #3 out of 6 ZIP codes in Edmonson County by population (and #436 out of 780 in KY). The area supports an estimated population of 1,090 residents across Data Pending housing units, with a population density of 5.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (37.235240, -86.172060)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 42259 |
| Primary City | Mammoth Cave |
| State / Province | KY |
| County | Edmonson |
| Total Population | 1,090 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 5.8 people/sq mi |
| Timezone | America/Chicago |
How 42259 Compares
| Metric | ZIP 42259 | Edmonson County | KY State Average |
|---|
| Population | 1,090 | 9,649 (Total) | 4,542,460 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 5.8 /sq mi | -- | -- |
| County Pop Rank | #3 of 6 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →